Genome 371 Lecture 4 - Genome 371 Lecture 4 1/26/11 4:15 PM...

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1/26/11 4:15 PM Genome 371 Lecture 4 Page 1 of 8 http://courses.washington.edu/au371mkr/resources/lecture_notes/lecture_04.html Lecture 4 Chromosome segregation-2 11 Oct 2010 Lecture 04 handout (pdf) Subscribe to podcast: Slide 1 Slide 2 Home Course mechanics Help hours Calendar Syllabus Lectures, Podcasts Quiz Sections Practice problems Exams GoPost Send email to class Useful links The Gradiator
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1/26/11 4:15 PM Genome 371 Lecture 4 Page 2 of 8 http://courses.washington.edu/au371mkr/resources/lecture_notes/lecture_04.html Slide 3 Slide 4 Slide 5 Slide 6 TheIn order for paired homologous chromosomes to be correctly oriented on the spindle (such that each member of a pair is properly targeted towards opposite poles), the homologues have to be held together by some means. (Note that the synaptonemal complex just brings the homologues into alignment, after which it is dissolved--so it's gone by the end of prophase.) So, if the homologues are just aligned as shown in this picture but not held together, they can just get pulled apart, leading to premature anaphase. Crossing over gets around this problem.
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1/26/11 4:15 PM Genome 371 Lecture 4 Page 3 of 8 http://courses.washington.edu/au371mkr/resources/lecture_notes/lecture_04.html
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This note was uploaded on 03/31/2011 for the course GENOME 371 taught by Professor Unsure during the Spring '03 term at University of Washington.

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Genome 371 Lecture 4 - Genome 371 Lecture 4 1/26/11 4:15 PM...

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